Exemption

62. Containers, reservoirs, or tanks
used exclusively for the storage of asphalt.

63. Storage tanks with a capacity of
less than 40,000 gallons used exclusively for the storage of sweet
crude oil, sweet natural gas condensate, gasoline and petroleum
fuels having a true vapor pressure of less than 11 psia at the
maximum storage temperature.

64. Equipment used for transporting
materials on streets or highways, including those highways defined
by Article X, Section 2 of the Constitution of Texas.

65. Equipment used exclusively for heat
treating, soaking, case hardening or surface conditioning of metal
objects, such as carbonizing, cyaniding, nitriding,
carbon-nitriding, siliconizing or diffusion treating when sweet
natural gas or LP gas is used as a fuel.

66. Crucible furnaces, pot furnaces, or
induction furnaces with a capacity of 1000 pounds or less each, in
which no smelting, reduction, sweating, or distilling is conducted
and with the following limitations:

69. Water and waste water treatment
facilities using only one or any combination of the following
treatment procedures: flocculation, sedimentation, aeration,
activated sludge, trickling filters or stabilization ponds. Units
utilizing incineration, volatile carbon compound-water separation,
gas stripping or similar operations are not exempt.

70. Confined feeding operations which
satisfy the following conditions:

Livestock animal feedlots designed to feed less than 1000
animals

Caged egg laying operations designed to house less than 20,000
hens and range turkey feeding operations designed to feed less than
20,000 turkeys when a dry manure handling and storage system is
used or the manure is handled as a liquid slurry and stored in
covered pits.

All housed broiler, pullet, turkey and breeder hen operations
when wood shavings or similar material is used as litter.

Expansion of existing feeding facilities in operation prior to
March 1, 1972 when the expansion does not exceed 100% of the animal
capacity as of March 2, 1972. No expansion of existing facilities
in a Standard Metropolitan Statistical Area is covered by this
exemption.

The plant is located at least 1/4 mile away from any
recreational area or residence or other structure not occupied or
used solely by the owner of the facility or the owner of the
property upon which the facility is located.

Emissions of sulfur dioxide are less than 25 tons per year and
hydrogen sulfide emissions are less than 4 pounds per hour. The
height of the hydrogen sulfide emission point must meet condition
(3) in Exemption No. 104 for tank batteries handling sour crude
oil.

Emissions of non-methane, non-ethane organic compounds,
including fugitive losses, are less than 25 tons per year. Fugitive
emissions shall include losses from water desorption as well as
from valves, pumps and compressor seals.

Compressors associated with this facility shall meet the
requirements of Exemption No. 6.

The appropriate regional supervisor shall be notified prior to
construction.